我在 Ubuntu 上使用带有 virtualmin 设置的 webmin，并使用 Postfix 和 Dovecot 进行 pop，我可以接收消息但不能发送消息，它只适用于本地 php 驱动的邮件，当我尝试连接到 smtp 服务器时，我得到：
DEBUG: getProvider() returning javax.mail.Provider[TRANSPORT,smtp,com.sun.mail.smtp.SMTPTransport,Sun Microsystems, Inc]
DEBUG SMTP: useEhlo true, useAuth true
DEBUG SMTP: trying to connect to host "***", port 25, isSSL false
220 *** ESMTP Postfix (Ubuntu)
DEBUG SMTP: connected to host "****", port: 25
EHLO localhost
250-****
250-PIPELINING
250-SIZE 10240000
250-VRFY
250-ETRN
250-STARTTLS
250-AUTH PLAIN DIGEST-MD5 CRAM-MD5 NTLM LOGIN
250-AUTH=PLAIN DIGEST-MD5 CRAM-MD5 NTLM LOGIN
250-ENHANCEDSTATUSCODES
250-8BITMIME
250 DSN
DEBUG SMTP: Found extension "PIPELINING", arg ""
DEBUG SMTP: Found extension "SIZE", arg "10240000"
DEBUG SMTP: Found extension "VRFY", arg ""
DEBUG SMTP: Found extension "ETRN", arg ""
DEBUG SMTP: Found extension "STARTTLS", arg ""
DEBUG SMTP: Found extension "AUTH", arg "PLAIN DIGEST-MD5 CRAM-MD5 NTLM LOGIN"
DEBUG SMTP: Found extension "AUTH=PLAIN", arg "DIGEST-MD5 CRAM-MD5 NTLM LOGIN"
DEBUG SMTP: Found extension "ENHANCEDSTATUSCODES", arg ""
DEBUG SMTP: Found extension "8BITMIME", arg ""
DEBUG SMTP: Found extension "DSN", arg ""
DEBUG SMTP: Attempt to authenticate
DEBUG SMTP: check mechanisms: LOGIN PLAIN DIGEST-MD5 NTLM
535 5.7.8 Error: authentication failed: authentication failure
Authentication Failed
这是我的 postfix/main.cf
# See /usr/share/postfix/main.cf.dist for a commented, more complete version
# Debian specific: Specifying a file name will cause the first
# line of that file to be used as the name. The Debian default
# is /etc/mailname.
#myorigin = /etc/mailname
smtpd_banner = $myhostname ESMTP $mail_name (Ubuntu)
biff = no
# appending .domain is the MUA's job.
append_dot_mydomain = no
# Uncomment the next line to generate "delayed mail" warnings
#delay_warning_time = 4h
readme_directory = no
# TLS parameters
smtpd_use_tls=no
smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache
smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache
# See /usr/share/doc/postfix/TLS_README.gz in the postfix-doc package for
# information on enabling SSL in the smtp client.
myhostname = ***
alias_maps = hash:/etc/aliases
alias_database = hash:/etc/aliases
myorigin = /etc/mailname
mydestination = ***
mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128
mailbox_size_limit = 0
recipient_delimiter = +
inet_interfaces = all
virtual_alias_maps = hash:/etc/postfix/virtual
smtpd_sasl_auth_enable = yes
smtpd_recipient_restrictions = permit_mynetworks reject_unauth_destination
smtpd_tls_security_level = none
我已经搜索了 7 个多小时了，准备自杀，所以非常感谢任何帮助:)
答案1
您没有将 Postfix 配置为使用 Dovecot 作为身份验证类型。请执行此操作。有关更多信息，请参阅文档。http://www.postfix.org/postconf.5.html#smtpd_sasl_type
额外遵循达夫科特 维基和Postfix 手册。